Burner



(No Model.)

' J. J. ROBINSON.v

' BURNER. No. 448,080. Patented Mar. 10, 1891.

UNITED STATES i PATENT OFFICE.

JOHN J. ROBINSON, OF BROOKLYN, NElV YORK.

BURNER.

SPECIFICATION forming part of Letters Patent No. 448,080, dated March-10, 1891.

Application filed February 21, 1890. $eria1No. 841,282. (No model.)

To aZZ wlwm it may concern:

Be it known that I, JOHN J. RoBINsoN, of Brooklyn, in the county of Kings and State of New York, have invented a new and useful Improvement in Burners, of which the following is a full, clear, and exact description.

My invention relates to an improvement in burners, especially gas-burners, and has for its object to provide an article having all the functions of the ordinary burner, and so constructed that when heated the gas will be automatically supplied thereto, and when cold Wherein the supply of gas will be automatically cut off, thus effectually preventing the escape of gas at the burner, even should the fiame be blown out.

The invention consists in the novel con- Struction and combination of the several parts, as will be hereinafter fully set forth, and pointed out in the claims.

Reference is to be had to the accompanyin g drawings, forming a part of this specification, in which similar figures and letters of reference indicate corresponding parts in all the views.

Figure 1 is a central Vertical section through the shell of the burner. Fig. 2 is a Vertical section through the valve adaptedl to be located within the shell, and Fig. 3 is a bottom plan view of the valve.

The burner consists of a tubulai` shell A, provided with the usual tip 10, and an interiorly-threaded lower end 11 for attachment to a bracket or other fixture, and above the said threaded lower end the shell of the burner is enlarged to form, preferably, a cylindrical offset or extension 12, having a flat top and bottom face but the contour of the offset may be varied as in practice it may be found desirable.

By reason of the offset 12, which is hollow, a lower enlarged Chamber 13 is obtainedhaving direct communication with the inlet 11 and the Outlet of the burner, as best shown in Fig. 1. lVithin the ohamber 13 a valve 14 is located, conforming to the Shape of the chamber, the said valve being usually of disk form and having a flat upper` and lower surface, and the said valve is provided with a threaded aperture in its upper face and a chamfered lower marginal edge 15. This chamfered edge when employed is adapted to find a seat upon the knit'e-edge of a rib 16, extending around the inner peripheral wall of the Chamber 13 at its bottom. When the valve is thus seated, any gas entering the lower end of the burner is effectually prevented from passing upward to the t-ip and the valve acts as a ball-valve.

In the threaded aperture of the valve a plug 17 is screwed and to the upper end of said plug the lower extremity of a composite suspension-rod 18 is attached, the upper extremity of the suspension-rod being secured to the walls of the burner-Shell belowthe tip, and the connection is ordinarily effected by a transverse pin 19, passed through the shell -and suspension-rod and secured in the former,

as best illustrated in Fig. 1. The Suspensionrod is preferably formed of two strips of metal of unequal expansion, such as brass and iron, riveted or otherwise secured to each other. The object of the screw-plug 17 is to adjust the distance between the transverse pin 19 and the knife-edge valve-Seat 16, so that when the burner is cold the valve may rest on the seat.

In operation, when the Shell A is heated even to a slight degree longitudinal expan- Sion takes place, and as any expansion in the suspension-rod 18 is compensated for by its becoming curved orbowed the actual distance between the points at which the pins pass through it is practically unchanged, and as the suspension-rod is secured to the Shell at 19, as the Shell expands the valve 14 is lifted a sufficient distance above its seat to permit the gas to enter at the inlet 11 and find its way around the Valve to the top for ignition. As the suspension-rod is connected to the plug by a pin passing through jaws of plug and extrernity of rod and to Shell by pin 19, on both of which pins the rod is free to move, the curvature in composite Suspension-md, resulting from the unequal expansion of the strips, will not interfere with the operation of the valve, which will always remain in a horizontalposition. lVhentheshellbecomescool-e by reason, for instance, of the flame having been blown out by any possible means-it contracts and assumes its normal dimensions, whereupon the Valve which has been IOO properly adj usted within Vthe Shell seats itself upon the rib 16 or its equivalent and forms a perfect Seal, effectually preventing any gas entering the lower portion of the burner from finding its way to the tip thereof. Vhen the gas is to be lighted and the burner is cool, the valve may be raised by holding a lighted match in essentially close proximity to the Shell. Comparatively little delay is experienced in lighting the gas, as a Very mild heat will cause the Shell to expand suffioiently to permit sufficient gas to find its way to the tip to be ignited. i

I-Iaving thus described my invention, I claim as' new and desire to Secure by Letters Patent- 1. The combination, with the burner having' a valve-seat within its lower portion, of

a downward-closing' horizontal Valve restingv upon said Seat, and a thermostat Suspensionrod secnred at its upper end within the upper part of the lourner and Seeured at its lower end to the said Valve to positively raise it from its seat and lower it, Substantially as set forth.

2. The combination, with the burner havin g a valve-seat in its lower portion, of a downward-elosing horizontal valve restinp; upon said seat, and a thermostat Suspension rod pivotally connected at its lower end to the upper Side of the valve and Secured at its npper end within the upper part of the burner, Suhstantially as set forth.

The combination, with the burner having a valve-seat in its lower portion, of a downward-closing valve resting' thereon, and a Suspension-rod formed of nnequally eXpansiVe metallic strips and pivoted at its lower end to the said valve and Seeured at its upper end within the upper part of the burner.

4. The Combination, with the burner having a valve-seat in its lower portion,0f a horizontal valve provided on its upper side With a central Vertical screw-plug, and the thermo- Stat Suspension-rod pivoted at its lower end to said plug` and secu red at its upper end within the upper end of the burner, Substantially as Set forth.

5. The combination, with the burner having an enlarged Chamber 13 at its lower end, an annular knife-edge valve-Seat 16 on the bottom of said Chamber, and a central inlet 11, of the horizontal disk-valve 14, having a lower beveled edge 15 resting on said knifeedge, a central Vertical Screw-plug in the upper Side of the said Valve, and the Suspensionrod formed of unequally expansive metallie Strips and pivoted at its lower end to Said plug and at its upper end within the upper part of the burner, Substant-ially as set forth.

JOHN J. ROBINSON.

VitnesseS:

E. M. OLARK, EDGAR TATE. 

